The Ratings Percentage Index (RPI) is a formula used by the NCAA to aide in selecting teams and seedings for the NCAA Tournament. RPI is made up of a team's winning percentage (25%), its opponents' winning percentage (50%), and the winning percentage of those opponents' opponents (25%). In 2004 the RPI was modified to account for differences in home and away games. A home win counts as 0.6 win, while a road win counts as 1.4 wins. Conversely, a home loss equals 1.4 losses, while a road loss counts as 0.6 loss.

StatSheet is the only site on the web to compute RPI/SOS metrics multiple times daily.That's one reason our numbers may vary from other sites--we are more up-to-date.